506789987605 has 48 divisors (see below), whose sum is σ = 687300009984. Its totient is φ = 358253280000.

The previous prime is 506789987603. The next prime is 506789987651.

506789987605 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 506789987605 - 2¹ = 506789987603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506789987603) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6684460 + ... + 6759850.

It is an arithmetic number, because the mean of its divisors is an integer number (14318750208).

Almost surely, 2^506789987605 is an apocalyptic number.

506789987605 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

506789987605 is a deficient number, since it is larger than the sum of its proper divisors (180510022379).

506789987605 is a wasteful number, since it uses less digits than its factorization.

506789987605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75730 (or 75719 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 70.

The spelling of 506789987605 in words is "five hundred six billion, seven hundred eighty-nine million, nine hundred eighty-seven thousand, six hundred five".